Astronomy:5655 Barney
| Discovery [1] | |
|---|---|
| Discovered by | C. J. van Houten I. van Houten-G. T. Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 29 September 1973 |
| Designations | |
| (5655) Barney | |
| Named after | Ida Barney [1] (American astronomer) |
| 1159 T-2 · 1988 EN1 | |
| Minor planet category | main-belt [1][2] · (middle) Maria [3] |
| Orbital characteristics [2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.56 yr (16,277 d) |
| |{{{apsis}}}|helion}} | 2.6804 AU |
| |{{{apsis}}}|helion}} | 2.4765 AU |
| 2.5784 AU | |
| Eccentricity | 0.0395 |
| Orbital period | 4.14 yr (1,512 d) |
| Mean anomaly | 52.666° |
| Mean motion | 0° 14m 17.16s / day |
| Inclination | 14.497° |
| Longitude of ascending node | 193.49° |
| 21.237° | |
| Physical characteristics | |
| Mean diameter | 6.11 km (calculated)[4] 6.599±0.055 km[5][6] |
| Rotation period | 2.661±0.0003 h[7] |
| Geometric albedo | 0.20 (assumed)[4] 0.256±0.028[5][6] |
| S [4][8][9] | |
| Absolute magnitude (H) | 12.985±0.002 (R)[7] 13.0[6] 13.1[2] 13.26±0.28[8] 13.43[4] |
5655 Barney, provisional designation 1159 T-2, is a Maria asteroid from the central regions of the asteroid belt, approximately 6.5 kilometers (4 miles) in diameter. It was discovered during the second Palomar–Leiden Trojan survey in 1973, and named for American astronomer Ida Barney in 1994.[1] The stony S-type asteroid has a rotation period of 2.66 hours.[4]
Orbit and classification
Barney is a core member of the Maria family (506),[3] a large intermediate belt family of stony asteroids.[10] It orbits the Sun in the central main-belt at a distance of 2.5–2.7 AU once every 4 years and 2 months (1,512 days; semi-major axis of 2.58 AU). Its orbit has an eccentricity of 0.04 and an inclination of 14° with respect to the ecliptic.[2]
Discovery
Barney was discovered on 29 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the U.S. Palomar Observatory, California. No precoveries were taken prior to its discovery. The body's observation arc begins with its official discovery observation.[1]
Palomar–Leiden survey
Physical characteristics
Barney has been characterized as a stony S-type asteroid in the SDSS taxonomy of the Moving Object Catalog (MOC) and by the survey conducted by Pan-STARRS.[4][8][9]
Rotation period
In August 2010, a rotational lightcurve of Barney was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 2.661 hours with a brightness amplitude of 0.20 magnitude ({{{1}}}).[4][7]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Barney measures 6.599 kilometers in diameter and its surface has an albedo of 0.256.[5][6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 6.11 kilometers based on an absolute magnitude of 13.43.[4]
Naming
This minor planet was named in memory of American astronomer Ida Barney (1886–1982), who worked at the Yale University Observatory during 1924–1959. She supervised and significantly contributed to the Yale Observatory Zone Catalog for which the positions and proper motions of a large number stars were measured.[1] The official naming citation was published by the Minor Planet Center on 25 May 1994 (M.P.C. 23541).[11]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "5655 Barney (1159 T-2)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=5655.
- ↑ 2.0 2.1 2.2 2.3 "JPL Small-Body Database Browser: 5655 Barney (1159 T-2)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005655.
- ↑ 3.0 3.1 "Asteroid 5655 Barney". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=5655+Barney.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 "LCDB Data for (5655) Barney". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=5655%7CBarney.
- ↑ 5.0 5.1 5.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M.
- ↑ 6.0 6.1 6.2 6.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. (catalog)
- ↑ 7.0 7.1 7.2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. doi:10.1088/0004-6256/150/3/75. Bibcode: 2015AJ....150...75W.
- ↑ 8.0 8.1 8.2 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V.
- ↑ 9.0 9.1 Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics 510: 12. doi:10.1051/0004-6361/200913322. Bibcode: 2010A&A...510A..43C. https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_I0035_5_SDSSTAX_V1_1/data/sdsstax_ast_table.tab. Retrieved 30 October 2019. (PDS data set)
- ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. Bibcode: 2015aste.book..297N.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
<ref> tag with name "MPC-discoverers" defined in <references> is not used in prior text.External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 5655 Barney at AstDyS-2, Asteroids—Dynamic Site
- 5655 Barney at the JPL Small-Body Database
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